An as built eBIM & Revit survey requires more client interaction that a traditional 2D survey. In the past the client would issue a survey specification, this would provide a clear cut set of requirements and deliverables for the surveyors to produce.
eBIM surveys are open to a lot more assumptions and this needs to be fully understood by both parties. eBIM requires an understanding of the client’s role and what is intended with the structure being surveyed. This requires a project kick off meeting prior to starting the laser survey, so that a model can be delivered that meets the overall project’s aims.
The appropriate level of detail is important when developing a BIM model. Whilst it is easy to get carried away with modelling everything, the reality is that the Revit model needs to be developed enough to generate 1:100 / 1:50 scale survey plans, sections and elevations.
The following is a standard specification built on our experience. There may be some parts of the model which will need to be modelled to a higher level of detail, anything not included in the specification below would be classed as additional and would require a separate quotation.
• Internal partitions up to ceiling height
• Internal / external walls / floors at visible level
• Sanitary fittings – indicative
• Stairs
• Windows, doors
• Ceilings and bulk heads
• Railings, balustrade
• Primary Structure extent of visible area – columns, beams and trusses
• Visible secondary structure – columns, supporting curtain walling
• Floor Slabs and level changes
• Key MEP elements to be clarified on site
Specifications are tailored to each individual project and agreed prior to survey. eBIM™ Specification overrides any subsequent or generic specs provided by the client.